Low-pressure casting unit capable of alternately using crucible type heat preservation furnaces

ABSTRACT

A low-pressure casting unit capable of alternately using crucible type heat preservation furnaces, consisting of a low-pressure casting machine, a crucible type heat preservation furnace I, a crucible type heat preservation furnace II, a trolley transfer system, a heat preservation furnace lifting system, a control system, and a transversely moving guide rail, the heat preservation furnace lifting system being arranged at a bottom of the low-pressure casting machine, the heat preservation furnace lifting system lifting the crucible type heat preservation furnace I or the crucible type heat preservation furnace II up and down in the low-pressure casting machine, one side of the low-pressure casting machine being provided with a trolley transfer system in front and the trolley transfer system moving on the transversely moving guide rail. According to the invention, the concept is ingenious, the alternative use of the two crucible type heat preservation furnaces can be realized only by adding a transversely moving guide rail on the outer side of the low-pressure casting machine and adding a transfer trolley. The problem of aluminum slags deposited at the bottom of the crucible type heat preservation furnace is well solved.

TECHNICAL FIELD

The invention relates to a double-chamber continuous pressurizing aluminum liquid electric heat preservation furnace for a low-pressure casting machine, in particular to a low-pressure casting unit capable of alternately using crucible type heat preservation furnaces.

BACKGROUND ART

In the field of low-pressure casting, a low-pressure casting system consists of a low-pressure machine, an aluminum liquid heat preservation furnace and a control system, wherein the aluminum liquid heat preservation furnace is generally formed by pouring and sintering low-moisture non-stick aluminum casting materials at one time; In the casting process of the low-pressure machine, the aluminum liquid heat preservation furnace is located at the bottom of the low-pressure machine, and is pressurized by a control system through a liquid lifting pipe fixed in the aluminum liquid heat preservation furnace. Therefore, aluminum liquid in the heat preservation furnace enters the mold cavity from the liquid lifting pipe for molding; After continuous production for a period of time, the aluminum liquid in the heat preservation furnace is gradually reduced until the aluminum liquid cannot be sucked by the liquid lifting pipe, and the aluminum liquid needs to be replenished through the front furnace door of the aluminum liquid heat preservation furnace. Disadvantages: during design and manufacture, the bottommost part of the liquid lifting pipe is generally at a distance from the bottom inside the heat preservation furnace, and the purpose is to prevent aluminum slag deposited at the bottom from being sucked into the liquid lifting pipe to cause poor castings. Due to the design, the aluminum liquid at the bottommost part of the liquid lifting pipe is always exhaustless, the alloy composition can be changed after long time, and the old aluminum liquid can change the new aluminum liquid composition, so that the quality of castings is influenced. When the new aluminum liquid is poured through the furnace door of the heat preservation furnace, scouring force can be formed, originally precipitated aluminum slag and the like at the bottom of the heat preservation furnace are stirred, impurities can enter the casting along with the filling of the liquid lifting pipe, and defective products can be easily manufactured.

SUMMARY OF THE INVENTION

Aiming at the problems, the invention aims to provide a low-pressure casting unit capable of alternately using crucible type heat preservation furnaces, so that the residual aluminum liquid of each heat preservation furnace can be completely cleaned, and each casting process is ensured with fresh aluminum liquid.

The technical scheme of the invention is realized in the following manner: a low-pressure casting unit capable of alternately using crucible type heat preservation furnaces, which consists of a low-pressure casting machine, a crucible type heat preservation furnace I, a crucible type heat preservation furnace II, a trolley transfer system, a heat preservation furnace lifting system, a control system and a transversely moving guide rail, wherein the bottom of the low-pressure casting machine is provided with a heat preservation furnace lifting system; the crucible type heat preservation furnace I or the crucible type heat preservation furnace II is lifted up and down in the low-pressure casting machine by a heat preservation furnace lifting system as required, wherein a transversely moving guide rail is arranged in front of the low-pressure casting machine, an aluminum liquid adding station I and an aluminum liquid adding station II are arranged on the transversely moving guide rail, and a trolley transfer system moves on the transversely moving guide rail.

The crucible type heat preservation furnace I is arranged on one side of the low-pressure casting machine, the control system is arranged on the other side. The crucible type heat preservation furnace II filled with aluminum liquid is transferred to the bottom of the low-pressure casting machine through the trolley transfer system, the heat preservation furnace lifting system is lifted to a working position, and the control system controls the low-pressure casting machine to perform continuous casting operation.

Aluminum liquid in the crucible type heat preservation furnace II is exhausted, the heat preservation furnace lifting system descends, the crucible type heat preservation furnace II is transferred to the aluminum liquid adding station I or the aluminum liquid adding station II by the trolley transfer system. The filled crucible type heat preservation furnace I in the other aluminum liquid adding station is pushed into the low-pressure casting machine, and is lifted to the working position by the heat preservation furnace lifting system, and the work is repeated.

In the present invention, the special station is adopted, and impurities such as aluminum slag and the like can be thoroughly treated when aluminum liquid is added again. The cleanliness of the aluminum liquid is guaranteed, the quality of the cast product is high, the product quality is greatly improved, and the aluminum liquid heat preservation furnaces can be alternately used.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view showing the structure of the present invention.

FIG. 2 is a schematic view showing the position of the present invention.

In the figures: 1 low-pressure casting machine, 2 crucible type heat preservation furnaces I, 3 crucible type heat preservation furnace II, 4 trolley transfer system, 5 heat preservation furnace lifting system, 6 control system, 7 aluminum liquid adding station I, 8 aluminum liquid adding stations II, 9 transversely moving guide rail.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIGS. 1 and 2, a low-pressure casting unit capable of alternately using crucible type heat preservation furnaces comprises a low-pressure casting machine 1, a crucible type heat preservation furnace I 2, a crucible type heat preservation furnace II 3, a trolley transfer system 4, a heat preservation furnace lifting system 5, a control system 6 and a transversely moving guide rail 9, wherein the heat preservation furnace lifting system 5 is arranged at the bottom of the low-pressure casting machine 1. A crucible type heat preservation furnace I 2 or a crucible type heat preservation furnace II 3 is lifted up and down in a low-pressure casting machine 1 by a heat preservation furnace lifting system 5 as required, a transversely moving guide rail 9 is arranged in front of the low-pressure casting machine 1, an aluminum liquid adding station I 7 and an aluminum liquid adding station II 8 are arranged on the transversely moving guide rail 9, and a trolley transfer system 4 moves on the transversely moving guide rail 9.

The crucible type heat preservation furnace I 2 is arranged on one side of the low-pressure casting machine 1, the control system 6 is arranged on the other side, the crucible type heat preservation furnace II 3 filled with aluminum liquid is transferred to the bottom of the low-pressure casting machine 1 through the trolley transfer system 4, the heat preservation furnace lifting system 5 is lifted to a working position, and the control system 6 controls the low-pressure casting machine 1 to perform continuous casting operation.

When the aluminum liquid of the crucible type heat preservation furnace 113 is used up, the control system 6 sends an instruction, the heat preservation furnace lifting system 5 is lowered, the crucible type heat preservation furnace II 3 is transversely moved to the aluminum liquid adding station I 7 or the aluminum liquid adding station II 8 along the transversely moving guide rail 9 by the trolley transfer system 4, and the filled crucible type heat preservation furnace I 2 at the other aluminum liquid adding station is pushed into the low-pressure casting machine 1. The heat preservation furnace lifting system 5 is lifted to a working position, and the work is repeated. According to the invention, the concept is ingenious, the alternative use of the two crucible type heat preservation furnaces can be realized only by adding a transversely moving guide rail on the outer side of the low-pressure casting machine and adding a transfer trolley. The problem of bad castings caused by aluminum slags deposited at the bottom of the crucible type heat preservation furnace for casting is well solved.

The above embodiments are merely illustrative of the technical idea of the present invention and are not intended to limit the scope of the present invention, and any changes made on the basis of the technical solution according to the technical idea proposed by the present invention fall within the scope of the present invention. 

1. A low-pressure casting unit capable of alternately using crucible type heat preservation furnaces, consisting of a low-pressure casting machine, a crucible type heat preservation furnace I, a crucible type heat preservation furnace II and a heat preservation furnace lifting system, the heat preservation furnace lifting system being arranged at a bottom of the low-pressure casting machine, the heat preservation furnace lifting system controlling the crucible type heat preservation furnace I or the crucible type heat preservation furnace II to lift up and down in the low-pressure casting machine, characterized in that wherein one side of the low-pressure casting machine is provided with a trolley transfer system and a transversely moving guide rail, an aluminum liquid adding station I and an aluminum liquid adding station II being arranged on the transversely moving guide rail, and the trolley transfer system moving on the transversely moving guide rail.
 2. The low-pressure casting unit capable of alternately using crucible type heat preservation furnaces according to claim 1, characterized by further comprising a control system, the crucible type heat preservation furnace I being arranged on one side of the low-pressure casting machine, the control system being arranged on another side, and the crucible type heat preservation furnace II filled with aluminum liquid being transferred to a bottom of the low-pressure casting machine by the trolley transfer system, the crucible type heat preservation furnace II being lifted to a working position by the heat preservation furnace lifting system, and the control system controlling the low-pressure casting machine to perform continuous casting operation.
 3. The low-pressure casting unit capable of alternately using crucible type heat preservation furnaces according to claim 1 wherein aluminum liquid of the crucible type heat preservation furnace II is exhausted, the heat preservation furnace lifting system descends, and the crucible type heat preservation furnace II is transferred to an aluminum liquid adding station I or an aluminum liquid adding station II 8 by the trolley transfer system, with the crucible type heat preservation furnace I filled with aluminum liquid in another aluminum liquid adding station being pushed into the low-pressure casting machine, being lifted to a working position by the heat preservation furnace lifting system, and foresaid work being repeated. 